[QUESTIONS] Where are jobs stored and how to use multiple servers

[emergingdzns]

The documentation isn't terribly clear on a couple things.

1. Where are the jobs stored? Is it put into cache somewhere? I don't see any DB related stuff here so I don't imagine it's in the db. Does it write it to the crontab file somehow?

2. The documentation says to run a worker but how does the worker get the jobs? What I'd like to be able to do is assign jobs across multiple workers (or even better to a queue or several queues) and have them work on them synchronously but simultaneously with each other, which out tripping on each other.

Thanks!